There are (or were) two ways of getting an SE onto ETHERNET. ASANTE made an internal board that provided an ethernet port on the back of the unit. They also made a SCSI based unit called an EN/SC that worked with many MAC models that provided an ethernet port via the SCSI port. A bit clumsy but workable. I've seen these on "junk tables" and other salvage outlets. You might still find one in stock at a hardcore Mac retailer or mail-order house.

Thank you for the response. The information is helpful, but I would also like the last segment of my question answered. Namely, would my newly enhanced SE be able to connect to any network that a new iMac could? If not, what questions can I ask of my network administrator to find out if it would work (before I buy anything). Thanks, bdemarest

This video shows how to remove a single email address from the Outlook 2010 Auto Suggestion memory.
NOTE: For Outlook 2016 and 2013 perform the exact same steps.
Open a new email: Click the New email button in Outlook.
Start typing the address: …